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top-
top-and-tail
top banana
top billing
top boot
top box
top brass
top-class
top dead-center
top dog
top dollar
top-down
top-drawer
top-dress
top dressing
Top End
top-front
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top dead-center
top dead-cen·ter


noun 
Definition:
 
top position of piston: the position of a piston in an engine or pump when it is at the top of its stroke
Encarta® World English Dictionary [North American Edition] © & (P)2009 Microsoft Corporation. All rights reserved. Developed for Microsoft by Bloomsbury Publishing Plc.
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